642 EXPERIMENT STATION RECORD. [Yol. 36 



California, 54 varieties originating in tlie State and 86 varieties originating 

 elsewhere are here listed. 



The cultivation and fertilization of the avocado in Florida, W. J. Kromk 

 (Cal. Citrogr., 2 (1911), No. 4, pp. 12, 21, 22, fig. i).— The author's methods of 

 cultivating and fertilizing avocado trees as experimentally developed during 

 the past few years are here described. 



Inherent characteristics of Theobroma cacao, and a summary on cacao 

 experiments, F. E. Oliviebi {Proc. Agr. Soc. Trinidad and Tobago, 16 (1916), 

 No. 12, pp. 461-474). — A description of the inherent characteristics of the cacao 

 tree, together with a brief summary of some of the more important investiga- 

 tions dealing with cacao. 



Note on the species and varieties of cofEee g^own in Java, P. J. Westeb, 

 trans, by H. Mauey (Bui. Hcon. Indochine, n. ser., 19 (1916), No. 121, pp. 624- 

 637). — A French translation of the author's article previously noted (E. S. R., 

 35, p. 745). 



The cultivation of ^uavas in Gujarat, L. B. Kulkabni (Dept. Agr. Bombay 

 Bui. 79 (1916), pp. 14, pis. 3). — An account of native methods of growing 

 guavas in different sections of Gujarat, including analyses of soil and fruit, 

 estimated data on the cost of growing guavas, and brief suggestions relative to 

 improvement in cultural methods. 



Effect of fertilizers on the composition and quality of oranges, H. D. 

 Young (U. S. Dept. Agr., Jour. Agr. Research, 8 (1917), No. 4, pp. 127-138).— 

 In connection with a continuous fertilizer experiment started by the California 

 Experiment Station in 1907, and which has been reported on from time to time 

 (E. S. R., 36, p. 138), a study was undertaken in 1914 and 1915 relative to the 

 effect of the various fertilizers on the quality and composition of oranges. 

 Analytical data are given and discussed both for Valencia and navel oranges 

 fertilized differently, for oranges grown on light and heavy soil, and fertilized 

 with commercial fertilizer and with organic matter. Other investigations 

 along similar lines are briefly reviewed. 



Nitrogen was the only element which seemed to exercise a specific effect on 

 the composition of the oranges. No great differences in composition were ob- 

 served between oranges fertilized with commercial fertilizer and with organic 

 matter. Likewise, oranges grown on a light soil and a heavy soil did not show 

 material difference in composition under the same fertilizer treatment. Appli- 

 cations of nitrogen to the soil resulted in a slightly lower amount of sugar, a 

 somewhat coarser fruit, and a little less juice in the orange, regardless of 

 whether the nitrogen was in combination with either potash or phosphoric acid, 

 or both. The effects of nitrogenous fertilizers were greater in the 1915 crops, 

 which were harvested about two months later than the 1914 crops, thus indi- 

 cating that nitrogen produced an effect other than that of merely delaying the 

 time of maturity. A comparison with fruit from similar trees grown outside 

 the fertilizer plats showed a fair agreement of composition and quality. The 

 analyses show a higher percentage of nitrogen from all plats receiving it, while 

 no such effect was obtained with either phosphoric acid or potash. 



Notes on medicinal plants, A. Hosking (West of Scot. Agr. Col. Bui. 78 

 (1917), pp. 99-149). — This bulletin discusses the possibilities and limitations of 

 the cultivation and collection from wild sources of medicinal plants in Scot- 

 land, gives directions for growing herbs, and presents a list of hardy herbs, 

 trees, and shrubs used in medicine. 



Collection, drying, and cultivation of medicinal plants in Russia, V. L. 

 KoMAEOv (Sbor, Sushka i Razvedenie Lekarstvennykh Rasten'il v Rossii. Peiro- 

 grad: Dept. Zeml., 1916, 2. cd., pp. 128, pis. 66). — A manual of information rela- 

 tive to the collection, drying, and cultivation of medicinal plants, including 



